轉自：https://blog.csdn.net/lsm135/article/details/74945116
1. 啓用消息事務
<property name="sessionTransacted" value="true"/>
2. 當消息在消費的時候，如果用戶程序拋出Exception，則消息會回滾重傳（mq裏面的未消費消息數目不變），
spring 的activemq默認最多重傳6次， 超過6次，即使拋出了異常，這個消費仍然被消費不可回滾。
jms.redeliveryPolicy.maximumRedeliveries=6（默認）
我們可以設置brokerURL裏面的jms.redeliveryPolicy.maximumRedeliveries=-1
-1表示可以無限次重傳，0表示不重傳。
注意中間要用 html轉移符 & (就是url查詢字符串裏的&字符)
3.消息隊列回滾的觸發--程序本身運行異常，比如數據庫操作異常，如果自己用程序去檢查數據庫更新條數，如果小於1，程序可以人爲編寫代碼，人爲
拋出一個RuntimeException. 這兩種情況都能觸發消息的rollback
如在onMesssage()裏，或者內部嵌套的方法裏
throw new RuntimeException("Update DB failed.");
最終配置文件如下
appContext.xml
-
<?xml version="1.0" encoding="UTF-8"?> -
<beans xmlns="http://www.springframework.org/schema/beans" -
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" -
xsi:schemaLocation=" -
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd -
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> -
<import resource="mybatisContext.xml" /> -
<import resource="shardingContext.xml" /> -
<!-- 配置JMS連接工廠 --> -
<!-- 測試環境 --> -
<bean id="jmsFactory" class="org.apache.activemq.spring.ActiveMQConnectionFactory"> -
<property name="brokerURL" -
value="failover:(tcp://10.0.0.9:61616)?randomize=false&timeout=3000&initialReconnectDelay=100&jms.useAsyncSend=true&jms.redeliveryPolicy.maximumRedeliveries=-1" /> -
</bean> -
<!-- 配置JMS模版 --> -
<bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate"> -
<property name="connectionFactory"> -
<!-- lets wrap in a pool to avoid creating a connection per send --> -
<bean class="org.springframework.jms.connection.SingleConnectionFactory"> -
<property name="targetConnectionFactory"> -
<ref local="jmsFactory" /> -
</property> -
</bean> -
</property> -
</bean> -
<!-- MQ監聽者 --> -
<bean id="smsSendForMQListener" -
class="org.springframework.jms.listener.DefaultMessageListenerContainer"> -
<property name="connectionFactory"> -
<ref bean="jmsFactory" /> -
</property> -
<property name="destinationName"> -
<value>DistributePics</value> -
</property> -
<property name="messageListener"> -
<ref bean="saveListener" /> -
</property> -
<!-- mq事務控制，如果拋異常了就回滾消息 --> -
<property name="sessionTransacted" value="true"/> -
</bean> -
<!-- Spring MVC --> -
<context:component-scan base-package="com.x.service"></context:component-scan> -
<context:component-scan base-package="com.x.controller.**"></context:component-scan> -
<context:component-scan base-package="com.x.listener"></context:component-scan> -
<context:component-scan base-package="com.x.spring"></context:component-scan> -
</beans>
java程序如下：
-
package com.x.imgapp.listener; -
import java.util.concurrent.Future; -
import javax.jms.JMSException; -
import javax.jms.Message; -
import javax.jms.MessageListener; -
import javax.jms.ObjectMessage; -
import javax.jms.BytesMessage; -
import org.springframework.stereotype.Component; -
import com.x.imgapp.common.model.MsgBean; -
import com.x.imgapp.concurrent.AppExecutor; -
import com.x.imgapp.concurrent.MoveThread; -
import org.apache.activemq.command.ActiveMQBytesMessage; -
import org.apache.activemq.util.ByteSequence; -
import org.slf4j.Logger; -
import org.slf4j.LoggerFactory; -
/** -
* -
* @author frank.liu -
* -
*/ -
@Component("saveListener") -
public class SaveDBListener implements MessageListener { -
private static final Logger logger = LoggerFactory.getLogger(SaveDBListener.class); -
private static Long receiveCount = 0L; -
@Override -
public void onMessage(Message message) { -
logger.info("Step into onMessage()------------------------------->"); -
ActiveMQBytesMessage msg = (ActiveMQBytesMessage) message; -
ByteSequence sequence = msg.getContent(); -
String msgStr = new String(sequence.data); -
// -
// Future<Integer> future = AppExecutor.getExecutor().submit(new MoveThread(msgStr)); -
logger.info("receiveCount:{}", ++receiveCount); -
throw new RuntimeException("Update DB failed."); -
} -
}